|
1
22
23
24 package org.xquark.xquery.metadata;
25
26 import java.util.Collection  ;
27 import java.util.HashMap ;
28 import java.util.Iterator ;
29
30 import org.xml.sax.SAXException ;
31 import org.xml.sax.helpers.AttributesImpl ;
32 import org.xquark.schema.Schema;
33 import org.xquark.schema.SchemaReader;
34 import org.xquark.util.DefaultXMLReader;
35 import org.xquark.xpath.XTreeReader;
36
37
38 public class MetaHandler
39 extends DefaultXMLReader {
40 private static final String RCSRevision = "$Revision: 1.1 $";
41 private static final String RCSName = "$Name: $";
42
43 private MetaDataImpl metadata = null;
44 private MetaWrapper metawrapper = null;
45 private MetaCollection metacollection = null;
46 private AttributesImpl atts = new AttributesImpl ();
47 private String label = "ipo";
48
49 public MetaHandler(MetaDataImpl metadata) { this.metadata = metadata; }
50
51 public MetaHandler(MetaWrapper metawrapper) { this.metawrapper = metawrapper; }
52
53 public MetaHandler(MetaCollection metacollection) { this.metacollection = metacollection; }
54
55
58 public void parse(String systemId) throws SAXException , java.io.IOException {
59 if (metacollection != null) { browseMetaCollection(metacollection); }
60 else {
61 if (metawrapper != null) { browseMetaWrapper(metawrapper); }
62 else {
63 if (metadata != null) { browseMetaData(metadata); }
64 }
65 }
66 }
67
68 public void browseMetaCollection(MetaCollection metacollection) throws SAXException , java.io.IOException {
69 atts.addAttribute("", "name", "", "CDATA", metacollection.getCollectionName());
70 contentHandler.startElement("", "collection", "", atts);
71 atts.clear() ;
72 XTreeReader reader = new XTreeReader(metacollection.getXTree());
73 reader.setFeature(XTreeReader.FRAGMENT_FEATURE, true) ;
74 reader.setContentHandler(contentHandler) ;
75 reader.parse("");
76 contentHandler.endElement("", "collection", "");
77 }
78
79 public void startPrint(String sourcename, String label) throws SAXException , java.io.IOException {
80 contentHandler.startDocument() ;
81
82 atts.addAttribute("xmlns", "xsi", "", "CDATA", "http://www.w3.org/2001/XMLSchema-instance");
83 atts.addAttribute("xmlns", label, "", "CDATA", "http://www.xquark.org/WRAPPERMETADATA");
84 atts.addAttribute("xsi", "schemaLocation", "", "CDATA", "http://www.xquark.org/XMLDBC/Metadata XMLDBCMetaData.xsd");
85 atts.addAttribute("", "source", "", "CDATA", sourcename);
86 contentHandler.startElement(label, "metadata", "", atts);
87
88 atts.clear() ;
89
90 contentHandler.startElement("", "schemas", "", atts);
91 Collection schemas;
92
93 if (metawrapper != null) {
94 schemas = metawrapper.getMetaData().getSchemaManager().getSchemas();
95 }
96 else {
97 schemas = metadata.getSchemaManager().getSchemas();
98 }
99
100 if (schemas != null) {
101 for (Iterator iterator = schemas.iterator(); iterator.hasNext();) {
102 Schema schema = (Schema)iterator.next();
103 if (schema == null) {
104 continue;
105 }
106 String namespace = schema.getNamespace();
107 if (namespace.startsWith("http://www.w3.org")) {
108 continue;
109 }
110 SchemaReader schemaReader = new SchemaReader(null);
112 schemaReader.setContentHandler(contentHandler) ;
113 schemaReader.parse(schema, false);
114 }
116 }
117
118 contentHandler.endElement("", "schemas", "");
119 }
120
121 private void endPrint(String label) throws SAXException , java.io.IOException {
122 contentHandler.endElement(label, "metadata", "");
123 }
124
125 public void browseMetaWrapper(MetaWrapper metawrapper) throws SAXException , java.io.IOException {
126 startPrint(metawrapper.getSourceName(), label);
127 atts.clear() ;
128 contentHandler.startElement("", "collections", "", atts);
129 Iterator values = metawrapper.getMetaCollections().values().iterator();
130
131 while (values.hasNext()) {
132 MetaCollection metacollection = (MetaCollection)values.next();
133 browseMetaCollection(metacollection);
134 }
135
136 contentHandler.endElement("", "collections", "");
137 endPrint(label);
138 }
139
140 public void browseMetaData(MetaDataImpl metadata) throws SAXException , java.io.IOException {
141 atts.clear() ;
142 startPrint("ACCESSOR-SOURCE", label);
143 contentHandler.startElement("", "collections", "", atts);
144
145 for (Iterator e = metadata.getMetaWrappers().values().iterator(); e.hasNext();) {
146 MetaWrapper wrapperi = (MetaWrapper)e.next();
147 HashMap metacollections = wrapperi.getMetaCollections();
148 Iterator values = metacollections.values().iterator();
149
150 while (values.hasNext()) {
151 MetaCollection metacollection = (MetaCollection)values.next();
152 browseMetaCollection(metacollection);
153 }
154 }
155
156 contentHandler.endElement("", "collections", "");
157 endPrint(label);
158 }
159
160 }
161
162
163
164 |
Popular Tags |
Java API By Example, From Geeks To Geeks.